
static const char* DEFAULT_VERTEX_SHADER =
"uniform mat4 u_mvpMatrix;\n"
"attribute vec4 a_position;\n"
"attribute vec2 a_texcoord0;\n"
"varying vec2 v_texCoord;\n"
"void main()\n"
"{\n"
"    gl_Position = u_mvpMatrix * a_position;\n"
"    v_texCoord = a_texcoord0;\n"
"}\n";

static const char* DEFAULT_FRAGMENT_SHADER =
"precision mediump float;\n"
"varying vec2 v_texCoord;\n"
"uniform sampler2D s_texture;\n"
"void main()\n"
"{\n"
"    gl_FragColor = texture2D( s_texture, v_texCoord );\n"
"}\n";
